# Curity Identity Server vs league/oauth2-server: side-by-side comparison (2026)

[Curity Identity Server](https://cybersectools.com/tools/curity-identity-server) is a commercial [access management](https://cybersectools.com/categories/access-management) solution by [Curity](https://cybersectools.com/companies/curity). [league/oauth2-server](https://cybersectools.com/tools/leagueoauth2-server) is a free [access management](https://cybersectools.com/categories/access-management) solution. Features, integrations, deployment and the company behind each one, side by side.

Need the answer fast? [Best Access Management Solutions for Business](https://cybersectools.com/shortlists/best-access-management-solutions) picks Microsoft Entra ID, Okta Single Sign-On, Ping Identity Platform and 4 more.

## Side-by-side comparison

| | Curity Identity Server | league/oauth2-server |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | Access Management | Access Management |
| Verified | No | No |
| Deployment type | Hybrid | On-Premises |
| Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| GitHub stars | – | 6,618 |
| Last commit | – | Aug 2025 |
| Company | Curity | – |
| Headquarters | – | – |

### Use cases and capabilities

| | Curity Identity Server | league/oauth2-server |
|---|---|---|
| Authentication | Yes | – |
| Authorization | Yes | – |
| SSO | Yes | – |
| MFA | Yes | – |
| JWT Security | Yes | – |
| Zero Trust Architecture | Yes | – |
| PHP | – | Yes |

### Integrations

**Curity Identity Server**

10 integrations listed. Sign in on the page to see them.

**league/oauth2-server**

No integrations listed.

## Which one fits you

Based on what each listing shows: deployment, company size, price and open source.

- [Curity Identity Server](https://cybersectools.com/tools/curity-identity-server) fits if you need both cloud and on-premises options.
- [league/oauth2-server](https://cybersectools.com/tools/leagueoauth2-server) fits if you need to run it on your own servers, you are a startup, you need a free product and you want an open-source product.

## Curity Identity Server vs league/oauth2-server FAQ

Common questions when comparing Curity Identity Server vs league/oauth2-server for access management.

### What is the difference between Curity Identity Server and league/oauth2-server?

**Curity Identity Server**: Identity server platform for managing authentication and access decisions. Built by Curity.

**league/oauth2-server**: A PHP OAuth 2.0 authorization server implementation with support for various grants and RFCs.

The table above shows where their features, integrations, deployment and company size fit differ.

### Who makes Curity Identity Server and league/oauth2-server?

**Curity Identity Server** is made by Curity. **league/oauth2-server** is open-source with 6,618 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Curity Identity Server a good alternative to league/oauth2-server?

Often, yes. Curity Identity Server and league/oauth2-server are both Access Management products. Key differences: Curity Identity Server is Commercial while league/oauth2-server is Free, league/oauth2-server is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Curity Identity Server vs F5 BIG-IP Zero Trust Access](https://cybersectools.com/compare/curity-identity-server-vs-f5-big-ip-access-policy-manager-apm)
- [Curity Identity Server vs SecureAuth](https://cybersectools.com/compare/curity-identity-server-vs-secureauth)
- [Curity Identity Server vs Broadcom Identity and Access Management](https://cybersectools.com/compare/broadcom-identity-and-access-management-vs-curity-identity-server)
- [league/oauth2-server vs F5 BIG-IP Zero Trust Access](https://cybersectools.com/compare/f5-big-ip-access-policy-manager-apm-vs-leagueoauth2-server)
- [league/oauth2-server vs SecureAuth](https://cybersectools.com/compare/leagueoauth2-server-vs-secureauth)
- [league/oauth2-server vs Broadcom Identity and Access Management](https://cybersectools.com/compare/broadcom-identity-and-access-management-vs-leagueoauth2-server)

## Alternatives to each

- [See all Curity Identity Server alternatives](https://cybersectools.com/alternatives/curity-identity-server)
- [See all league/oauth2-server alternatives](https://cybersectools.com/alternatives/leagueoauth2-server)

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Source: https://cybersectools.com/compare/curity-identity-server-vs-leagueoauth2-server

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/curity-identity-server.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Curity Identity Server and league/oauth2-server: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md